Here is the full list of all 38 Thymesia achievements.
Unlock all achievements.
Empty the first health bar of Varg in the tutorial.
Reach the "Harmonized Force" ending.
Reach the "Chaotic Power" ending.
Collect all entries in the collection.
Reach all endings.
Collect all lore.
Break 1000 barrels.
Reach the "Power of Cleasing" ending.
Reach the "Blessing of Pure Blood" ending.
Reach the "Power of Vile Blood" ending.
Finish all levels.
Defeat Corvus.
Craft all potion recipes.
Unlock all plague weapons.
Defeat Urd.
Collect all story bits.
Defeat Sound of the Abyss.
Defeat Mutated Odur.
Reach max level.
Defeat any boss without using potion.
Defeat God of the Fools.
Collect all potion ingredients.
Finish "Hermes Fortress" level.
Defeat Varg.
Craft a potion recipe for the first time
Fully upgrade a potion.
Finish "Royal Garden" level.
Defeat The Hanged Queen.
Finish "Sea of Trees" level.
Defeat Odur.
Fully upgrade a plague weapon for the first time.
Unlock a plague weapon for the first time.
Start recalling for the first time.
Finish the tutorial.
Dead for the first time.
Rest at the beacon for the first time.
Reave a plague weapon for the first time.